Alarm lock



Nov. 16, 1926. 1,607,595

I u. G. REPLGGLE ALARM LOCK Filed March- 5 1925 Patented Nov. 16, 1926.

UNITED STATES PATENT QFFICE.

ULYSSES G. REPLOGLE, OF TOLEDQ, OHIO, HAZEL E. JAQUETTE, TWENTY-FIVE ASSIGNGE OF FOR'ZY ONE-E'I'UNDREDTHS TO OllE-I-ZUNDREDTHS TO FEEDERICK G. RE-

PLOGLE, TWENTY-FIVE ONE-HUNDREEJTHS TO JESSE VI. BROTVN, AND TEN ONE- HUNDREDTHS TO ALBERT C. JAQUETTE, ALL D13 TOLEDQ, OHIO.

ALARM LOCK.

Application filed March 5, 1925. Serial No. 13,122.

My invention has for its object to provide an alarm lock whereby an alarm, such as the ringing of a bell, lighting of a light, or the explosion of a cartridgemay be produced when an attempt is made to unlock the lock. My invention particularly has for its object to provide an alarm lock wherein a bell will be continuously rung when an attempt is made to unfasten or open the parts that are secured by the look. A great variety of forms of locks commonly found inthe market may be used with a few modifications to embody my invention. Thus the cheapest of door locks may be used or the barrel and plunger locks may be easily modified so as to contain the invention. Also the invention may be used for a great variety of purposes, not only for locking doors and boxes, but also locking automobile tires, automobiles, etc. Thus the inven tion may be used where two parts are to be secured together by means of an enclosed engaging member.

In a particular embodiment of the invention I have provided a means whereby the breaking of the lock or the slight movement of the bolt will release the hammer or tapper of the bell and cause it to continuously operate, means being provided for securing the tapper controlling means to prevent it from interfering with the operations of the tapper in sounding the alarm when the bolt has moved'a short distance.

The invention may be contained in struc tures of different forms and to illustrate a practical application of the invention I have selected an alarm lock containing my invention as an example of such structures and shall describe it hereinafter. The structure selected is shown in the accompanying drawing.

Figure 1 of the drawing is a side View of parts of the mechanism embodying my invention when in locked position. Fig. 2 is a side view of the mechanism when the bolt has been moved a short distance. Fig. 3 is a top view of the mechanism when the bolt has been moved in the position shown in Fig. 2. Fig. 4 is a top View of a lockingpin for securing the locking belt of thelock in looking position and in alarm sounding position. Fig. 5 is a front view of the collar for retaining the pin shown in Fi non-controlling position.

The lock shown in the drawing is of the simple type commonly used in doors oi homes. The lock 1 has a bolt 2 and is provided with the usual stop 3 and guides It also has the usual key notch 5 located in proximity to the key hole 6 so that the bolt will be engagedin the notch 5, when it is moved to the right or to the left to lock or unlock the door. The door casing 7 is provided with the usual bolt plate 8 for receiving the end of the bolt 2. In the form of construction shown the lock is a mortised lock which is secured within the body of the door 9. If desired the invention may be contained in a lock secured to the outside of the door and in fact the structure may be readily modified so that the invention may be incorporated in any lock which has a movable member that is moved to produce engagement between two parts in order to lock the said partstogether.

An alarm mechanism such as the alarm 41- in a bell 10 is so connected to the lock that any I movement of the lock as a whole or of the bolt in particular, will cause the alarm to be operated. In the form of construction shown the alarm mechanism 10 is located in position so that it may be mechanically controlled by the bolt 2. The alarm mechanism may be located within the casing of the door or it may be located within the shell of the lock, and thus the alarm lock mechanism may be installed as a unit with in or on the door. In the form of con struction shown in the drawing the alarm mechanism is supported on the door and may be set so as to be controlled by the bolt of the lock. The alarm mechanism 10 shown in the drawing is of the type commonly used for announcing the presence of someone at the door. It has the bell member ll that may be rotated in order to wind up the spring-12 which operates to drive certain gear wheels and escapement to actuate the tapper 13 when the push button 14- is operated in the manner well known in the art. In such constructions the tapper 3 iscontrolled by an elastic spring member 15 having a head 16. The elasticity of the member 15 operates to pull the head 16 against the tapper 13 to prevent it from vibrating in response to the tension of the spring 12 operating through gear wheels and the escapement. Pressure of the push button 1d pushes the head 16 away from the tapper 12 and allows it to operate. I have provided means whereby the tapper 13 1s released by movement of the bolt 2 without interfering with the operation of the push button 14, and thus without destroying the announcing character of the door bell.

A control member 18 is manipulated by the bolt 2 to release the tapper 13 and cause its actuation to soundthe alarm by a slight movement of the bolt 2. In the particular form of construction shown in the drawing the control member 18 is connected to the bolt 2. The control member may be connected to the bolt 2 by means of the arm 19 and the pin 20 that extends laterally through a slot 21. The control member 18 is a pivoted arm that is pivoted on the pin 20. The base 22 of the bell is provided with a flange 23 having recesses 24, 25 and 26. The control member 18 extends through the recesses 24 and 26 when in position to control the operation of the bell and through the recesses 24 and 25 when the bell is not to be controlled by the bolt 2. Thus the member 18 may be placed in a bell controlling or non-controlling position. Owing to the elasticity of the mem ber 18, it will be retained in these positions and when it' is desired to change it from one position to the other it is moved laterally from the door so that it can slip over that portion of the flange 23 located intermediate the recesses 25 and 26.

The control member 18 has a flattened portion 27 that is provided with a cam surface 28 located in position to engage the elastic arm and move the head 16 away from the tapper 13 and allow the tapper to sound the alarm, when the member 18 is in position to control the operation or the tapper, this, when it is in the recesses 24 and 26. This occurs when the bolt 2 is moved a very short distance in the lock to unlock the door by means of a key or in breaking openthe lock and moving the bolt from the plate 8. Thus when the bolt is moved by a skeleton key or any form of key the alarm will announce the attempt to unlock the door and yet the bell may be used as the ordinary door bell, since by pushing the push button 14: the elastic spring 15 will release the tapper 13 and cause the bell to ring. Thus the bell may be used as an enunciator or as in alarm to indicate in the one case the desire of someone to enter the builoing or in the other to announce an attempt to unlock the door.

lVhen it is desired to disconnect the alarm from the bolt all that is necessary is to arise the arm 18 so that by its elasticity it bolt in this position.

will enter the recess where it will be held by that portion of the flange 23 located between the recesses 25 and 26.

in order that the sounding of the bell may be continued for a considerable period of time when an attempt has be n made to move the bolt 2, l have provided an engaging member for engaging the bolt when it has moved a short distance within the lock and before it has moved a suiiicient dis;- tance to unlock the door. This will prevent anyone from quickly shifting the bolt to unlocked position, opening the door, and disconnecting the alarm from the bolt. Once the bolt 2 has moved a sui'iicient dise tence to permit engagement of the bolt, the alarm will continue to ring until the spring that actuates the alarm has run down. The belt engaging member consists of a spring pressed pin 30 that extends through the wall of the lock and is actuated by means of a spring 31 located between a pin 32 and the wall of the lock. '1 he pin 30 has a knob 33 for drawing the pin 30 outward against the resiliency of the spring 31. The pin 34) is provided with a pin 31 that is movable through a slot 35 formed in a coll r 36 cured to the outside of the door and located around the pin 30. Thus the pin 30 may be drawn from the door, the pin 31 moving through a slot 35, and then turned. .When the knob 33 is released the pin 3% will hold the pin 30 in its withdrawn position. The bolt 2 is provided with an opening whi h is so located with respect to the bolt 2 that when the bolt is located in an intermediate position, that is, a position intermediate that which will cause the arm '18 to engage the resilient member 15 to release the tappei: and the position that the bolt 2 will take when it is located well within the socket of the casing of the door, as determined by its partial endwise movement when on locked by the proper key. W hen, therefore, the bolt 2 has been moved a short distance towards the unlocking position the pin will enter the opening 37 and secure the This will prevent further movement of the bolt 2 in either di rection until the pin 30 has been withdrawn. Meantime the alarm will be sounded continuously until it has run down.

I claim 1. In an alarm look, a locking bolt, a bell, a tapper, for striking the bell, a mechanism for operating the tapper, a spring for engaging the tapper, an arm pivotally connected to the bolt for moving the spring to disengage the tapper, a supporting base for the said mechanism and the said bell, the said base having a'fiange, the flange having recesses for maintaining the arm in disengaging relation to the spring and recesses for-supporting the arm in its engaged relation to the spring, the said arm movable longitudinally in the last named recesses upon movement of the bolt whereby the spring is actuated to release the tapper to sound the alarm.

In an alarm lock, a pair of members one movable relative to the other, a locking bolt located. on one of the members, the other of the members having a socket for receiving the belt for locking the members relative to each other, a bell, a tapper for striking the hell, a mechanism for operating the t apper, a spring for restraining the tapper from operation, an arm Connected to the bolt for controlling the operation of the taoper by undo the said mechanism to cause the said mechanism to operate when the bolt is moved relative to the socket, the bolt having an opening, a spdng pressed pin for engaging the bolt in the said opening when the end of the bolt has moved a short distance in the socket to prevent entire withdrawal of the end portion of the bolt from the socket and to prevent movement of the bolt in either direction.

In testimony whereof I have hereunto signed my name to this specification.

ULYSSES Gr. REEPLOGLE. 

